### Function

# GLib unichar_xdigit_value

#### Declaration [src]

    gint
    g_unichar_xdigit_value (
      gunichar c
    )

#### Description [src]

Determines the numeric value of a character as a hexadecimal digit.

#### Parameters

`c`

  Type: `gunichar`

  A Unicode character.

#### Return value

Type: `gint`

If `c` is a hex digit (according to g_unichar_isxdigit()), its numeric value. Otherwise, -1.